Hello everyone, just a small warning this may contain spoilers, so read on only when you are familiar/have seen Gravity Falls.
So I recently got my pre-order for Journal 3, of course I was already delighted, but I was even more delighted when I found out what was under the jacket. 😛 It is a blueprint from Fiddleford H. McGuckett our mad scientist/banjo-loving guy. It is really interesting to see what is on the blueprint. Also interesting, but I never noticed until now that the hand has 6 fingers! Which totally is a hint to the author. How come I never noticed this before. Wow.
Under the jacket: